Grip support device



FIG. 1 is a perspective view of a grip support device.

FIG. 2 is an end view of the grip support device.

FIG. 3 is a first side view of the grip support device.

FIG. 4 is a top view of the grip support device.

FIG. 5 is a bottom view of the grip support device; and,

FIG. 6 is a second side view of the grip support device.

The broken lines shown represent subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a grip support device, as shown and described. 